Silo.



G. G. GRISWOLD.

SILO.

APPLIOA'H-0Nl num un a1, 19m

I IAGJ.

Patented Sept 13,1910.

GLEN o, GRIswoLD, 0F MADISON, oHIo.

Specification of Letters Patent.

Patented Sept. 13, 1910.

Application filed May 31, 1910. Serial No. 564,029.

To all whom it may concern: t

Be it known that I, (LnN (t. (mswonn7 eitizen. ot' the United States, residing at Madison. inthe county ot' Lake and State ot Ohio, have. invented eert'ain new and usejt'ul Improvements in Silos, of which the following is a speeitieation.

My invention relatesto improvements in silos2 and the invention consists in certain, details of construction in the style or type of silo which is built witlrwooden staves, and involves the .use of combined metal and wooden hoops7 all substantially as shown and described and particularly,pointed out in the elailns.

Int'he aceompanying drawings7 Figure I is a perspective view ot' a silo eomplete eniliodying;- my improvei-nents, and Fig. i is a eross sect ion ot' a segmentall portion thereof on a eonsiderably.larger seale than disclosed in Fig. Fig'. il is a perspeetive view ofa fragment ot' two staves and va portion of hoop and ring or binder abootltthe hoop and a support for the rinp,- on the hamm-*as well as' dlselosmg drain notches at internals 1n saidhoop. Fig. -l is a verticalYseetional eleration through the. doors. Fig. 5 is a perspeetive lview ot one of the yokes lfor adjustably.connecting the ends oi the hoop with said ends shown therein.

Most ot: the hoops used on silos at' the present day are made. entirely ot' steel.

mostly a round steel rodv` varying; in size from one-halt'- ineh up, :recording-to the sis/.e ot' the silo, while still other and older makes use an all-woodhoop. The disadvantages ot the steel rod hoop alone are. that it has no eontraet'ion or expansion in keeping with the wooden stares. and therefore in order to preserve' the silo, it is necessary that it' should be loosened and tightened and continually att-.luid or the silo is liableto collapse7 while in the ease ot' all wood hoops they soon wealt'en or rot out and allow the silo to burst when it is full and under heavy outward pressure.

prevent the inner or wooden hoop rotting A tions may demand.

I provide the same with a transverse groove /z at frequent intervals on its inside next to stave S, so that Athere is an open air `space (one or` more) for each stave which prevents all rotting of either staves vor hoops, While at the same time it allows the hoop to bend to a truer circle with reduced strain. I also nail. this hoop securely to each andeverys stave, or each stave to the hoop, as maybe desired. By having two woodenl surtaces together. and nailed securely to each other there ean be no noticeable contraction or expansion of either one, and, -`urtherrnore the silo can never get' out of shape nor beblown down when standingI alone or next-to buildings in even the'highest winds or when it is empty. This wooden hoop should prei erably beniade of short sections with ends splieed and bent under ste-ain. The groove h should be eut approxiniately one-half inch square. i

One of the principal advantages of this construction is that l. can -use common inch `boards in the making of this silo, which Ina-y. tei-tally reduces the cost of same, Whereas vers ot' silos ean embody my invention in their eonstruetion. Further, it( eostsy only. about haltl as inueh to ereet this style of silo. In eourse ot time the slaves are bound toy rot. andv will require a new silo in most eases, but underthis construction all that is required is new wooding' on the inside, simply nailed through onto the old hoops, and still further, I can use in this construet'ion nearly any length of staves, as l"Y require no steel spline but ean make all joints on a hoop. and by nailingn both ends tight there will be no leali. eheapen the eost ot' the silo. With this style ot' silo l require no springs, and the inetal hoops rarely it ever have to be tightened, and in no ease are loosened. @wing to the large eireuniterence of silos generally ,l prefer to malte the said rods or ties B in several pieces whit-h are suitably joined at their ends and provided eaeh with one. or more yoltes Y adapted to adjustably roh-neet said ends. llaeh end of the, Wire or rod is provided with a nut I. and the said tie eau loe made as tight upon the hoop as condi- .-\ny suitable eonpling This also will greatly.

in lieu of yoke Y may be provided for this purpose.

Referring specifically to the door or doors, it is to be observed that there is shown a single door D for each hoop, and that the ends of the doors are overlapped top Aand bottom by the hoops, so that said ends are not visible in outside elevation. Again, the said doors are` set into beveled jambs, or the jambs of the door are beveled from the! in side, Fig. 2, so that each door ,hlds its place without other' means of fastening and the hoops'take care of the ents and the tendency to bulge out-Ward under pressure. Usually the hoops are nearer together at the bottom of the silo than" at the top and they may be so in this case. l

It is to be observed that there is little it anydraw or taper in silos/generally, so that hoops cannot be tightened thereon as they are upon barrels, and hence I providev for nailing or spiking each hoop at intervals to the stavesor the staves to the hoops.y Then 'if there be more or less shrinkage rbecause of drying out of the silo the hoops Will still hold their place and thus the said nails or spikes become auxiliary in supporting the hoop and in fact best serve their purpose when the tie-rods and hoops may be somewhat slack. Again, I have found it desirable to support the tie or rod B independently upon the hoops and yet in such'Wa-y that it is confined thereon whether drawn closely or not by the nuts 3. But tn `do this I' have also found that it would be highly objectionable to channel the periphery of the hoop to make a groove tov lodge the rod therein because of the 'injury it would in flictupon the hoop, and. hence I have devised or provided a' series ot' metallic rests R, Whi'elrai'e fixed to the hoop at intervalsl and havetfchan'riels between the outwardly projecting side walls I thereof adapted to must be taken into account* Ain silo construe# tion because these varying conditions are unavoidably present in all oi them, and on account of 'their large size and surface a comparatively small drying in any given stave aggregates a large amount in all the staves together. vHence it is material and important to take account of this condition and make due provision for it.

' What I claim is: i

1. A silo having Wooden hoops at ,inter` vals top to bottom, tie `rods about said hoops and yokes connectingthe ends of said rods adapted to tighten the said rods, and rests on said hoops at intervals supporting said rods, said rests being constructedfrom sheet metal bent into opposite Walls and channels between said wallsin which said rods rest.

2.A silo having Wooden hoops, in combination with tie rods about the same and metallic rests at intervals for said rods fixed on said hoops and havingchannels adapted to confine said'rods, yokes connecting the ends of the rods constructed to tighten the same on the hoops, and said hoops nailed to thestaves of silo. z

In testimony whereof I aflix my `signature in presence of two wltncsses.

Witnesses IG. lfisnnlr, H. Il. KRAFT..

GLEN' o. (nnswonn. 

